[automerge] Replace BitmapRegionDecoder with ImageDecoder 2p: 0699193115

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/16681833

Bug: 204087139
Change-Id: Id0599a40b784f5049d6f78de27f50c933a127dce
Merged-In: I59cf3c21edce836ffbe9f24a08b3a8e077c5fcf3